Patent US2474653A successfully refreshed from Google Patents.
US2474653A
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US
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Helical gear compressor or motor
Assignee: JARVIS C MARBLE
•
Filing: 1946-04-19
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Granted: 1949-06-28
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Expires: 1966-04-19
Abstract
No abstract record available.
Inventors
- 👤 Boestad Gustav Karl William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:20
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/08; F04C18/12; F04C18/14; F04C18/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395956A
Cited
US1991541A
Cited
GB437042A
Cited
GB464494A
Cited
US2243874A
Cited
GB464476A
Cited
US2410172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |